Reference:SD-2013/002Title:Helicopter Operations Over a Hostile EnvironmentDescription:This Operational Directive is applicable to operators conducting public transport helicopter operations or commercial air transport operations over a hostile environment using AS332 or EC225 helicopters. It supersedes SD-2013/001.Status:Superseded on 23 April 2014Review Comment:Revoked by IN-2014/080.Version:1Date:16 July 2013